Description

Maleic Acid Monosodium Salt is a versatile organic salt derived from maleic acid, offering unique reactivity and solubility characteristics. Its primary value lies in its role as a key intermediate and functional additive in various chemical synthesis and industrial processes. This compound is essential for manufacturers in the pharmaceutical, agrochemical, and polymer industries seeking reliable and high-purity raw materials.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and other fine chemicals.
• Polymer & Resin Production: Acts as a monomer or cross-linking agent in the manufacture of specialty polymers, coatings, and adhesives.
• Agrochemical Formulations: Serves as a component or intermediate in the production of herbicides, pesticides, and plant growth regulators.
• Water Treatment Chemicals: Utilized as a chelating agent or scale inhibitor in industrial water treatment systems.
• Electroplating & Metal Surface Treatment: Functions as a buffering agent or complexant in plating baths and metal finishing processes.
• Laboratory & Research Reagent: Employed as a standard or reagent in analytical chemistry and biochemical research.

Basic Information

Item	Details
Product Name	Maleic Acid Monosodium Salt
CAS No.	3105-55-3
Molecular Formula	C4H3NaO4
Molecular Weight	138.05 g/mol
Synonyms	Sodium Hydrogen Maleate; Monosodium Maleate; Sodium Maleate Monobasic; Maleic Acid Sodium Salt; 2-Butenedioic Acid (Z)-, Monosodium Salt; (Z)-2-Butenedioic Acid Monosodium Salt; Maleic Acid, Monosodium Salt; Sodium Acid Maleate
EINECS	221-464-2

Quality Control

Our Maleic Acid Monosodium Salt is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for every shipment, detailing key parameters such as assay, impurity profile, and physical characteristics. Our quality commitment aligns with cGMP principles where applicable, and we can support compliance with REACH and other global regulatory frameworks.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (Titration)	≥ 98.0%
Water Content (KF)	≤ 2.0%
pH (5% Solution)	3.0 - 5.0
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.